@blue: #3f45ff;

.demo-flex {
  .rv-flexbox {
    color: #0b0b0b;
    font-size: 13px;
    .rv-flexitem {
      background-clip: content-box;

      &:nth-child(odd) {
        background-color: @blue;
      }
      &:nth-child(even) {
        background-color: lighten(@blue, 8%);
      }
    }
  }
}
.left  {
    display: flex;
    justify-content: space-around
}
.right {
    display: flex;
    flex-direction: column-reverse;
    align-content: space-between
}